Toyota Tacoma (2015-2018) Service Manual: System Description

Toyota Tacoma (2015-2018) Service Manual / Supplemental Restraint Systems / Occupant Classification System / System Description

SYSTEM DESCRIPTION

1. FRONT PASSENGER OCCUPANT CLASSIFICATION SYSTEM

(a) General Description

(1) The front passenger occupant detection ECU determines whether the front passenger seat is occupied by an adult or child (with child seat) or is unoccupied, based on the load that is applied to the front passenger seat and whether the seat belt is buckled. The system restricts the deployment of the front passenger airbag, front passenger side airbag, and the front passenger seat belt pretensioner in accordance with this judgment. The result is informed to the driver through the airbag ON/OFF indicator illumination.

(b) System Configuration

(1) This system consists of the occupant detection ECU, occupant classification sensors, airbag ON/OFF indicator, seat belt buckle switches, and airbag sensor assembly.

(1) The occupant classification sensors are installed on four brackets connecting the seat rail and the seat frame. The resistance values of these sensors, which vary in accordance with the load that acts on the brackets, are transmitted to the occupant detection ECU as signals. Upon receipt of the signals, the ECU determines the front passenger seat occupant conditions.

Initialization

INITIALIZATION 1. ZERO POINT CALIBRATION NOTICE: Make sure that the front passenger seat is not occupied before performing the operation. HINT: Perform the zero point calibration and sensitivit ...

System Diagram

SYSTEM DIAGRAM ...

Other materials:

Removal
REMOVAL PROCEDURE 1. REMOVE REAR SEAT CUSHION ASSEMBLY (a) Remove the 6 bolts and 2 rear seat cushion assemblies. 2. REMOVE NO. 4 ROOM PARTITION COVER LH 3. REMOVE NO. 4 ROOM PARTITION COVER RH 4. REMOVE NO. 3 ROOM PARTITION COVER ...

Steering Angle Sensor Output Malfunction (C1434)
DESCRIPTION Steering angle sensor (spiral cable with sensor sub-assembly) signals are sent to the skid control ECU (master cylinder solenoid) via the CAN communication system. When there is a malfunction in the CAN communication system, it is detected by the steering angle sensor (spiral cabl ...

System Description
SYSTEM DESCRIPTION 1. GENERAL (a) The blind spot monitor system has the blind spot monitor function and rear cross traffic alert function. (1) Blind spot monitor function The blind spot monitor function is a function that assists the driver in making the decision to change lanes. Th ...